// Copyright (c) 2009 Daniel Waterworth.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.

#include "file.h"
#include "securityexception.h"

#include <set>

using namespace std;

set<FILE *> handles;

FILE *secure_fopen(const char *filename, const char *mode) {
  // check filename and mode
  // conditionlly throw exception
  FILE *hd = fopen(filename, mode);
  handles.insert(hd);
  return hd;
}

int secure_fclose(FILE *stream) {
  if (handles.find(stream) == handles.end())
    throw security_exception;
  handles.erase(stream);
  int res = fclose(stream);
  return res;
}

size_t secure_fwrite(const void *ptr, size_t size, size_t count, FILE *stream) {
  if (handles.find(stream) == handles.end())
    throw security_exception;
  return fwrite(ptr, size, count, stream);
}

size_t secure_fread(void *ptr, size_t size, size_t count, FILE *stream) {
  if (handles.find(stream) == handles.end())
    throw security_exception;
  return fread(ptr, size, count, stream);
}
